package exception;

public class TryCatchDemo {
    public static void main(String[] args) {
        System.out.println("程序开始了");

        try{
            System.out.println(123);
            String line = null;
            System.out.println(line.length());
            System.out.println(321);
        }catch(Exception e){
            System.out.println("出错啦");
        }

        System.out.println("程序结束了");
    }
}
